/Engine/Source/Runtime/RenderCore/Public/ShaderCodeArchive.h
Descriptor of an individual shader.
struct FIoStoreShaderCodeEntry
union FIoStoreS...
@3002
uint64:  SF_Num...
Frequency
Shader type aka frequency (vertex, pixel, etc)
uint64
Packed
uint64:  30
ShaderGroupIndex
Each shader belongs to a (one and only) shader group (even if it is the only one shader in that group) that is compressed and decompressed together.
uint64:  30
UncompressedOffsetInGroup
Offset of the uncompressed shader in a group of shaders that are compressed / decompressed together.